Turbine.



W. A. SCOTT & H. P. GRANT.

TURBINE.

APPLICATION FILED NOV. 23, 1911.

Patented July '23, 1912.

INIVENTOXS (Strait 3, ,fi/ZWR Grant.

A/mme n'rnn srarns AENT OFFICE.

'iK IILLIAM A. SCOTT, 0F TACOM A, AND HENRY P. GRANT, OF SEATTLE,WASHINGTON, ASSIGNORS TO AMERICAN TURBINE COMPANY, INC., 0F SEATTLE,WASHINGTON,

A CORPORATION OF WASHINGTON.

TURBINE.

Specification of Letters Patent.

Patented July 23, 1912.

To all whom it may concern.

Be it known that we, lVILLIAM A. Soorr a-nd'HnNnY P. GRANT, citizens ofthe United States, residing at Tacoma and Seattle,: re-

spectively,'in the counties of Pierce and King, respectively, State oflVashington, have invented certain new and useful Improvements inTurbine-l lngines; and we do hereby declare the following to be a full,clear, and exact description of th invention, such as will enable othersskilled in the ,art to which it appertains to make and use the same.reference loc g had to the accompanying drawings, and to the letters andfigures of reference marked thereon, which form a part of thisspecification.

This invention relates to new and useful improvements in turbine enginesadapted for use with a fluid, either' gas, steam or water, and affordsmeans whereby the highest possible economy may be obtained and affordsmeans whereby a maximum power may be obtained by a minimum of energy.

()ur invention comprises Various details of construction andcombinationsand arrangements of parts which will be hereinafter fully described andthen specifically defined in the appended claim.

\Ve illustrate our invention in vthe accompanying drawings, in which:-Figure 1 is a vertical central sectional YlGW through our improvedrotor and transversely through the shaft, and Fig. 2 is a verticalsectional View taken in a plane at right angles to the section in Fig.l. v

Reference now being had to the details of the drawings by letter. Adesignates a casing in which a shaft l) is mounted in suitable hearingsand lixed to said shaft, by means of the spider arms is a tubular shellD having circuinern tial ports E formed therein through hich the fluidpasses from a series of spiral ducts or passageways F. The interior ofsaid shell is provided with exhaust ports H leading to the exhaustpassageway K. Said spiral ducts or passageways are separated from oneanother by means of the thin partitions O, the circumferences of whichpartitions form a series of separate compartments through which thefluid is directed from the inlet N.

In operation, in our improved turbine the shell with the series ofspiral passageways form'ing a rotor affords means whereby the fluid, asit enters theduct N, will be forced to take a uniform spiral course of alength corresponding to the length of the spiral turns of the rotorx Bythis means an exceedingly heavy torque will be produced from the momentthat the fluid enters the spiral passageways. In the action of thefluid, either steam, gas or water which may be utilized for carrying theenergy, the

properties of adhesion and velocity are depended upon, the attraction ofthe fluid to the rotor surfaces and the resistance of these particles tothe molecular separation combine in transmitting the velocity of themotive fluid to the available working surfaces of the rotors.

In our turbine, we present, by the sides of the partitions and thesurface of the spiral ways, a maximum surface for the fluid to act upon,thereby materially increasing the power obtained.

lVhat we claim to be new is A turbine comprising a casing. a shaftjournaled therein, a shell fastened to said shaft, a series ofspiralpassageways, the inner ends of which communicate throughcircumferential openings in said shell, said passageways separated fromone another by partitions, a portion of said shell extending laterallyof the passageways within said shell and having openings communicatingwith an exhaust port, as set forth.

In testimony whereof we hereunto aflix our signatures in the presence oftwo witnesses.

\VILLIAM A. SCOTT. HENRY P. GRANT lVitnesses as to Win. A. Scott:

HERBERT COGHRAN, HERBERT lVEsT. Witnesses as to Henry P. Grant:

Bn'n'ros E. BnNNn/rr, O. B. Pom).

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents.

Washington, D. C.

